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Thread: help with integration agian

  1. #1 help with integration agian 
    Forum Freshman
    Join Date
    Jul 2008
    Posts
    18
    I need help with 2 more integration problems.

    1) integral(e^x)(sec(e^x))dx

    2)intergal 1/{t sqrt(2t^2 -9)}dt

    Thanks any help would be greatly appreciated.

    The book answers are

    1) ln|sec(e^x) + tan(e^x)| +C

    2) {1/3}arcsec(|sqrt(2)t|/3) + C


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  3. #2  
    Forum Freshman
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    Jul 2008
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    Nevermind guys I caught my silly mistake, but thanks anyway


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  4. #3  
    Forum Ph.D.
    Join Date
    Apr 2008
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    956
    (1) Use the substitution and the formula .

    (2)

    Is the one you want to integrate? (If it is, use the substitution
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